gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1998.62A.2.280 Determination of Radiation Damage Ages on Parts of Zircon Grains by Raman Microprobe: Implications for Annealing History and U-Pb Stability Pidgeon R. T. School of Applied Geology, Curtin University of Technology, Perth, Australia Nasdala L. Institute of Theoretical Physics, TU Bergakademie, Freiberg, Germany Todt W. Department of Geochemistry, Max- Planck-Institute for Chemistry, Mainz, Germany 1998 62A 2 1174 1175 Copyright © 1998, The Mineralogical Society 1998